Motion-picture-projecting apparatus



C. V. HALL.

MOTION PICTURE PROJECTIENG APPARATUS.

APPLICATION FILED DCT. 13.1919.

Patented oet. 19, 1920.

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UNITED STATES CHARLES VICTOR HALL` 0F LOS ANGELES, CALIFORNIA, yASSIGNOB. OF ONE-TENTH T0 i JOHN E. LEONARD, 0F LOS ANGELES, CALIFORN'IA.

MOTION-PICTUBE-PRO-TECTING APPARATUS.

Specification of Letters Patent.

Patented oet. 19, iaeo.

il 'o all whom it may concern Be it known that I, CHARLES Vieron HALL, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Motion-Picture- Projecting Apparatus, of which the followin is a specification.

Illy invention relates to improvements in screens for showing motion pictures and the like.

The objects of my invention are to provide- -ing the principles of my invention.

Fig. 2 is a side elevation of a theater and stage showing the object screen in sectional elevation viewed from the side.

Fig. 3 is a front view looking toward the stage showing the object screen in front elevation.

More specifically 1 indicates an audience chamber having the seats 2 `and a-st'age 3.

In carrying out my invention a screen 4: is provided of a size suflicient to cover the view of the stage setting. The screen comprises a curved front lenticular wall 5 and a flat back wall 6 having a screen surface, said walls being sealed together and properly spaced by a side member 7 Through the top of the side member 7 is placed an inlet conduit 8 carrying a valve 9 and at the bottom of the screen through the side member 7 is a discharge conduit 10 carrying a valve 11.

At the back end of the theater is positioned a moving picture projecting means 12. In the o eration of the devicethe screen 4 is filled with a proper fluid such as alcohol and the light rays of the projectin lmeans carrying the pictures to be portraye are directed toward the screen.

It is here explained that the front wall 5 of the screen is transparent and the fluid body carried within the screen is transparent or may be colored or may have coloring matter in fixed or moving zones within a transparent fluid body. The back wall of the screenv is flat and is of opaque material or may have an opaque plating upon the inside or the outside, the material of which it is composed or the composition. of the plating, if so constructed, is of such nature that the light rays carrying the picture impression in passing through the front wall of the screen and through the fluid body will be caught and the pictures will become visible upon the opaque back wall of the lens.

The back wall when taken by itself presents nothing different from an ordinary flat screen but when faced with the wall 5 and the fluid body as shown herewith the pictures projected on said back wall through said wall 5 and said fluid body, appear stereoscopic that is the picture appears in greater depths than when using a conven tional llat screen.

The back wall may be plated with mercury or it may comprise a narrow cell formed of two side members spaced and filled with mercury or. it 'may be backed by any other suitable means which will portray the pictures properly.

Various changes may be made in the invention herein set forth without departing from the spirit thereof as claimed.

I claim:

1. In a screen for motion pictures, a front lenticular wall, a flat opaque back wall adapted to catch pictures projected through said front wall and to portray said pictures through said front wall, and a fluid body between said front lenticular wall and said flat back wall.

2. In a screen for moving pictures, a concavo-convex front lenticular wall, and a flat screen wall back of said lenticular wall and spaced therefrom to form a chamber between and adapted to catch pictures projected projected by light rays throu h said'curved through said lenticular Wall and to portray front wall upon said back wa 1' whereby the 10 said ictures through said lenticular Wall. ictures will be viewed through said curved 3. n combination, a curved front wall and ront wall with a stereoscopic eifect.

5 an opaque back Wall spaced therefrom to lln testimony whereof I have signed my form a chamber between and adapted to name to this specication. form a screen for portraying pictures, the screen members adapted vto catch pictures` CHAS. VICTOR HALL. 

